5 results about "Remote backup service" patented technology

The invention relates to a method, a system and equipment for backing up and recovering important data on a satellite. The method comprises the following steps: packaging important data on a satellite, and sending the data to a monitoring processor and a nonvolatile memory for backup; the important data is backed up online through the monitoring processor, the code block information is backed up passively through the first nonvolatile memory, and the important data is backed up actively through the second nonvolatile memory; when important data recovery is carried out, important data recovery is firstly carried out through the monitoring processor under the soft reset condition, if recovery fails, code block information recovery is carried out through the first nonvolatile memory, and then important data recovery is carried out through the second nonvolatile memory; and under the condition of re-electrification, code block information recovery is performed through the first nonvolatile memory, and then important data recovery is performed through the second nonvolatile memory. According to the method, the real-time performance and the recovery reliability of important data backup on the satellite can be improved.

The invention belongs to the technical field of mine hoist control, and particularly provides a mine hoisting high-voltage frequency conversion cabinet with on-line backup power devices, which mainly comprises N stages of in-use power devices, at least one stage of on-line backup power device and the like, and the at least one stage of on-line backup power device is electrified like the in-use power devices but is in no-load operation. Good quality is kept, and once some stages of the in-use power device break down or are powered off, one or more stages of the online backup power device are used for rapidly replacing the fault part of the in-use power device; when the mine hoisting high-voltage frequency conversion cabinet works, the faulted power device is withdrawn and maintained off line, and the faulted power device is used as a part of the online backup power device after being repaired to be qualified so as to recover online no-load operation and be recycled, so that the downtime of the mine hoisting high-voltage frequency conversion cabinet can be controlled due to reasons, and normal operation can be recovered within a short time (20 minutes); the production efficiency is improved, risks and potential safety hazards caused by reasons are reduced, and social and economic benefits are remarkable.

The invention provides a database online backup recovery fault tolerance method and device, and belongs to the technical field of database backup, and the method comprises the following steps: setting a database to directly act on metadata and a data file when data changes; before backup is started, the database is informed that backup is about to be started, and all database services before the informing moment are executed completely; performing copy-on-write on the new database business after the notification time; the database online backup adopts a mode of tolerating backup failure of a partial table, and meanwhile, backup copy-on-write content; after backup succeeds, copy-on-write of the new database service is stopped, and backup information is recorded and comprises table information of successful backup and table information of failed backup; when the backup data is used for data recovery, recovery is carried out according to the successfully backed-up table information. According to the method and the device, the fault-tolerant capability of backup recovery is provided under the scene of large data volume, the cost is reduced, more detailed backup information is provided, and the table which is successfully recovered and backed up can be recovered and appointed.

This invention proposes a fault-tolerant method and apparatus for online database backup and recovery, belonging to the field of database backup technology. The method includes: configuring the database to directly affect metadata and data files when data changes occur; notifying the database before backup begins, waiting for all database transactions prior to the notification time to complete; performing write-time replication for new database transactions after the notification time; the online database backup adopts a mode that tolerates backup failures of some tables while simultaneously backing up the write-time replicated content; after a successful backup, stopping write-time replication for new database transactions, recording backup information, including information on successfully backed-up tables and information on tables that failed to be backed up; and restoring data using the backup data according to the information on the successfully backed-up tables. This invention provides fault-tolerant backup and recovery capabilities in scenarios with large data volumes, reduces costs, and provides more detailed backup information, allowing for the recovery and specification of successfully backed-up tables.

This disclosure relates to the field of data backup technology, providing a method, apparatus, device, medium, and product for online partition backup. The method includes: in response to receiving a backup instruction for a target partition in an online state during operating system operation, associating the backup endpoint with a mirror mapping layer mapped to the target partition; and using the mirror mapping layer, performing block-level backup operations on blocks in the target partition to back up the target partition to the backup endpoint. The block-level backup operation includes: in response to receiving a real-time read / write operation for the target block, using the mirror mapping layer, updating the data content of the real-time read / write operation to the target block according to the current backup status of the target block and backing it up to the backup endpoint. This disclosure solves the problems of offline partition backup causing system service interruptions and being unable to cope with scenarios of dynamic changes in partition data, achieving online partition backup, allowing dynamic data writing, and avoiding business losses during the backup process.